21220101111122 has 8 divisors (see below), whose sum is σ = 31838534651916. Its totient is φ = 10607256227152.

The previous prime is 21220101111103. The next prime is 21220101111199. The reversal of 21220101111122 is 22111110102212.

It can be written as a sum of positive squares in 2 ways, for example, as 21053515504921 + 166585606201 = 4588411^2 + 408149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21220101111122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21220101111122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397154713 + ... + 1397169900.

Almost surely, 2^{21220101111122} is an apocalyptic number.

21220101111122 is a deficient number, since it is larger than the sum of its proper divisors (10618433540794).

21220101111122 is a wasteful number, since it uses less digits than its factorization.

21220101111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794328412.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21220101111122 its reverse (22111110102212), we get a palindrome (43331211213334).

The spelling of 21220101111122 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, one hundred eleven thousand, one hundred twenty-two".